[dia] Fix shape.dtd to include rx, ry attributes for rect

[Hans Breuer <hans src gnome org>]

commit 9654bcdfb85c9c8e01cdb08e2c338710166a3ba4
Author: Hans Breuer <hans breuer org>
Date:   Sun Aug 31 19:12:17 2014 +0200

    Fix shape.dtd to include rx, ry attributes for rect
    
    found by make distcheck

 doc/shape.dtd    |    4 +++-
 1 files changed, 3 insertions(+), 1 deletions(-)
---
diff --git a/doc/shape.dtd b/doc/shape.dtd
index e408e93..410ff12 100644
--- a/doc/shape.dtd
+++ b/doc/shape.dtd
@@ -86,7 +86,9 @@
   y CDATA #REQUIRED
   width CDATA #REQUIRED
   height CDATA #REQUIRED
-  style CDATA #IMPLIED >
+  style CDATA #IMPLIED
+  rx CDATA #IMPLIED
+  ry CDATA #IMPLIED >
 
 <!ELEMENT svg:image EMPTY >
 <!ATTLIST svg:image